745558272 has 108 divisors (see below), whose sum is σ = 2164873984. Its totient is φ = 246758400.

The previous prime is 745558241. The next prime is 745558327. The reversal of 745558272 is 272855547.

745558272 is a `hidden beast` number, since 74 + 5 + 558 + 27 + 2 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 346833 + ... + 348975.

Almost surely, 2^745558272 is an apocalyptic number.

745558272 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 745558272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1082436992).

745558272 is an abundant number, since it is smaller than the sum of its proper divisors (1419315712).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

745558272 is a wasteful number, since it uses less digits than its factorization.

745558272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2316 (or 2299 counting only the distinct ones).

The product of its digits is 784000, while the sum is 45.

The square root of 745558272 is about 27304.9129645198. The cubic root of 745558272 is about 906.7631538991.

The spelling of 745558272 in words is "seven hundred forty-five million, five hundred fifty-eight thousand, two hundred seventy-two".